corymbs of lavender-colored flowers of ageratum houstonianum in july

ageratum annual bed bloom blossom bluemink blueweed botany bud corymbs flora florescence florets flossflower flower fluffy foliage foot garden green greenery growth head herb herbaceous houstonianum inflorescence leaf lilac lush mauve mexican nature ornamental outdoors paintbrush park petal plant pussy summer vegetation violet whiteweed